xref: /openbmc/linux/drivers/clk/imx/clk.h (revision 0a73d21e)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __MACH_IMX_CLK_H
3 #define __MACH_IMX_CLK_H
4 
5 #include <linux/spinlock.h>
6 #include <linux/clk-provider.h>
7 
8 extern spinlock_t imx_ccm_lock;
9 
10 void imx_check_clocks(struct clk *clks[], unsigned int count);
11 void imx_register_uart_clocks(struct clk ** const clks[]);
12 
13 extern void imx_cscmr1_fixup(u32 *val);
14 
15 enum imx_pllv1_type {
16 	IMX_PLLV1_IMX1,
17 	IMX_PLLV1_IMX21,
18 	IMX_PLLV1_IMX25,
19 	IMX_PLLV1_IMX27,
20 	IMX_PLLV1_IMX31,
21 	IMX_PLLV1_IMX35,
22 };
23 
24 struct clk *imx_clk_pllv1(enum imx_pllv1_type type, const char *name,
25 		const char *parent, void __iomem *base);
26 
27 struct clk *imx_clk_pllv2(const char *name, const char *parent,
28 		void __iomem *base);
29 
30 enum imx_pllv3_type {
31 	IMX_PLLV3_GENERIC,
32 	IMX_PLLV3_SYS,
33 	IMX_PLLV3_USB,
34 	IMX_PLLV3_USB_VF610,
35 	IMX_PLLV3_AV,
36 	IMX_PLLV3_ENET,
37 	IMX_PLLV3_ENET_IMX7,
38 	IMX_PLLV3_SYS_VF610,
39 	IMX_PLLV3_DDR_IMX7,
40 };
41 
42 struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name,
43 		const char *parent_name, void __iomem *base, u32 div_mask);
44 
45 struct clk *clk_register_gate2(struct device *dev, const char *name,
46 		const char *parent_name, unsigned long flags,
47 		void __iomem *reg, u8 bit_idx, u8 cgr_val,
48 		u8 clk_gate_flags, spinlock_t *lock,
49 		unsigned int *share_count);
50 
51 struct clk * imx_obtain_fixed_clock(
52 			const char *name, unsigned long rate);
53 
54 struct clk *imx_clk_gate_exclusive(const char *name, const char *parent,
55 	 void __iomem *reg, u8 shift, u32 exclusive_mask);
56 
57 struct clk *imx_clk_pfd(const char *name, const char *parent_name,
58 		void __iomem *reg, u8 idx);
59 
60 struct clk *imx_clk_busy_divider(const char *name, const char *parent_name,
61 				 void __iomem *reg, u8 shift, u8 width,
62 				 void __iomem *busy_reg, u8 busy_shift);
63 
64 struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg, u8 shift,
65 			     u8 width, void __iomem *busy_reg, u8 busy_shift,
66 			     const char **parent_names, int num_parents);
67 
68 struct clk *imx_clk_fixup_divider(const char *name, const char *parent,
69 				  void __iomem *reg, u8 shift, u8 width,
70 				  void (*fixup)(u32 *val));
71 
72 struct clk *imx_clk_fixup_mux(const char *name, void __iomem *reg,
73 			      u8 shift, u8 width, const char **parents,
74 			      int num_parents, void (*fixup)(u32 *val));
75 
76 static inline struct clk *imx_clk_fixed(const char *name, int rate)
77 {
78 	return clk_register_fixed_rate(NULL, name, NULL, 0, rate);
79 }
80 
81 static inline struct clk *imx_clk_mux_ldb(const char *name, void __iomem *reg,
82 		u8 shift, u8 width, const char **parents, int num_parents)
83 {
84 	return clk_register_mux(NULL, name, parents, num_parents,
85 			CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT, reg,
86 			shift, width, CLK_MUX_READ_ONLY, &imx_ccm_lock);
87 }
88 
89 static inline struct clk *imx_clk_fixed_factor(const char *name,
90 		const char *parent, unsigned int mult, unsigned int div)
91 {
92 	return clk_register_fixed_factor(NULL, name, parent,
93 			CLK_SET_RATE_PARENT, mult, div);
94 }
95 
96 static inline struct clk *imx_clk_divider(const char *name, const char *parent,
97 		void __iomem *reg, u8 shift, u8 width)
98 {
99 	return clk_register_divider(NULL, name, parent, CLK_SET_RATE_PARENT,
100 			reg, shift, width, 0, &imx_ccm_lock);
101 }
102 
103 static inline struct clk *imx_clk_divider_flags(const char *name,
104 		const char *parent, void __iomem *reg, u8 shift, u8 width,
105 		unsigned long flags)
106 {
107 	return clk_register_divider(NULL, name, parent, flags,
108 			reg, shift, width, 0, &imx_ccm_lock);
109 }
110 
111 static inline struct clk *imx_clk_divider2(const char *name, const char *parent,
112 		void __iomem *reg, u8 shift, u8 width)
113 {
114 	return clk_register_divider(NULL, name, parent,
115 			CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
116 			reg, shift, width, 0, &imx_ccm_lock);
117 }
118 
119 static inline struct clk *imx_clk_gate(const char *name, const char *parent,
120 		void __iomem *reg, u8 shift)
121 {
122 	return clk_register_gate(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
123 			shift, 0, &imx_ccm_lock);
124 }
125 
126 static inline struct clk *imx_clk_gate_dis(const char *name, const char *parent,
127 		void __iomem *reg, u8 shift)
128 {
129 	return clk_register_gate(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
130 			shift, CLK_GATE_SET_TO_DISABLE, &imx_ccm_lock);
131 }
132 
133 static inline struct clk *imx_clk_gate2(const char *name, const char *parent,
134 		void __iomem *reg, u8 shift)
135 {
136 	return clk_register_gate2(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
137 			shift, 0x3, 0, &imx_ccm_lock, NULL);
138 }
139 
140 static inline struct clk *imx_clk_gate2_shared(const char *name,
141 		const char *parent, void __iomem *reg, u8 shift,
142 		unsigned int *share_count)
143 {
144 	return clk_register_gate2(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
145 			shift, 0x3, 0, &imx_ccm_lock, share_count);
146 }
147 
148 static inline struct clk *imx_clk_gate2_shared2(const char *name,
149 		const char *parent, void __iomem *reg, u8 shift,
150 		unsigned int *share_count)
151 {
152 	return clk_register_gate2(NULL, name, parent, CLK_SET_RATE_PARENT |
153 				  CLK_OPS_PARENT_ENABLE, reg, shift, 0x3, 0,
154 				  &imx_ccm_lock, share_count);
155 }
156 
157 static inline struct clk *imx_clk_gate2_cgr(const char *name,
158 		const char *parent, void __iomem *reg, u8 shift, u8 cgr_val)
159 {
160 	return clk_register_gate2(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
161 			shift, cgr_val, 0, &imx_ccm_lock, NULL);
162 }
163 
164 static inline struct clk *imx_clk_gate3(const char *name, const char *parent,
165 		void __iomem *reg, u8 shift)
166 {
167 	return clk_register_gate(NULL, name, parent,
168 			CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
169 			reg, shift, 0, &imx_ccm_lock);
170 }
171 
172 static inline struct clk *imx_clk_gate4(const char *name, const char *parent,
173 		void __iomem *reg, u8 shift)
174 {
175 	return clk_register_gate2(NULL, name, parent,
176 			CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
177 			reg, shift, 0x3, 0, &imx_ccm_lock, NULL);
178 }
179 
180 static inline struct clk *imx_clk_mux(const char *name, void __iomem *reg,
181 		u8 shift, u8 width, const char **parents, int num_parents)
182 {
183 	return clk_register_mux(NULL, name, parents, num_parents,
184 			CLK_SET_RATE_NO_REPARENT, reg, shift,
185 			width, 0, &imx_ccm_lock);
186 }
187 
188 static inline struct clk *imx_clk_mux2(const char *name, void __iomem *reg,
189 		u8 shift, u8 width, const char **parents, int num_parents)
190 {
191 	return clk_register_mux(NULL, name, parents, num_parents,
192 			CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE,
193 			reg, shift, width, 0, &imx_ccm_lock);
194 }
195 
196 static inline struct clk *imx_clk_mux_flags(const char *name,
197 		void __iomem *reg, u8 shift, u8 width, const char **parents,
198 		int num_parents, unsigned long flags)
199 {
200 	return clk_register_mux(NULL, name, parents, num_parents,
201 			flags | CLK_SET_RATE_NO_REPARENT, reg, shift, width, 0,
202 			&imx_ccm_lock);
203 }
204 
205 struct clk *imx_clk_cpu(const char *name, const char *parent_name,
206 		struct clk *div, struct clk *mux, struct clk *pll,
207 		struct clk *step);
208 
209 #endif
210